feat(secubox): add profile loader with YAML parsing

- Define Profile struct with packages, kernel, services, features
- Implement Load() function for YAML files
- Add base.yaml with common SecuBox foundation
- Add unit tests for profile loading

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

cmd/secubox/internal/profile/profile.go

@@ -0,0 +1,74 @@
+// cmd/secubox/internal/profile/profile.go
+package profile
+
+import (
+	"fmt"
+	"os"
+
+	"gopkg.in/yaml.v3"
+)
+
+// Profile represents a SecuBox image profile configuration
+type Profile struct {
+	Name        string                 `yaml:"name"`
+	Inherits    string                 `yaml:"inherits,omitempty"`
+	Description string                 `yaml:"description"`
+	Constraints Constraints            `yaml:"constraints,omitempty"`
+	Packages    Packages               `yaml:"packages,omitempty"`
+	Kernel      Kernel                 `yaml:"kernel,omitempty"`
+	Services    Services               `yaml:"services,omitempty"`
+	Sysctl      map[string]interface{} `yaml:"sysctl,omitempty"`
+	Features    Features               `yaml:"features,omitempty"`
+}
+
+// Constraints defines hardware requirements for the profile
+type Constraints struct {
+	MinRAM string `yaml:"min_ram,omitempty"`
+	MaxRAM string `yaml:"max_ram,omitempty"`
+}
+
+// Packages defines required and excluded packages
+type Packages struct {
+	Required []string `yaml:"required,omitempty"`
+	Excluded []string `yaml:"excluded,omitempty"`
+}
+
+// Kernel defines kernel version and module configuration
+type Kernel struct {
+	Version string        `yaml:"version,omitempty"`
+	Modules KernelModules `yaml:"modules,omitempty"`
+}
+
+// KernelModules defines modules to enable or blacklist
+type KernelModules struct {
+	Enable    []string `yaml:"enable,omitempty"`
+	Blacklist []string `yaml:"blacklist,omitempty"`
+}
+
+// Services defines systemd services to enable or disable
+type Services struct {
+	Enable  []string `yaml:"enable,omitempty"`
+	Disable []string `yaml:"disable,omitempty"`
+}
+
+// Features defines optional feature flags
+type Features struct {
+	DPI  interface{} `yaml:"dpi,omitempty"`
+	LXC  bool        `yaml:"lxc,omitempty"`
+	Swap string      `yaml:"swap,omitempty"`
+}
+
+// Load reads and parses a profile YAML file
+func Load(path string) (*Profile, error) {
+	data, err := os.ReadFile(path)
+	if err != nil {
+		return nil, fmt.Errorf("read profile %s: %w", path, err)
+	}
+
+	var p Profile
+	if err := yaml.Unmarshal(data, &p); err != nil {
+		return nil, fmt.Errorf("parse profile %s: %w", path, err)
+	}
+
+	return &p, nil
+}

cmd/secubox/internal/profile/profile_test.go

@@ -0,0 +1,36 @@
+package profile
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+func TestLoadProfile(t *testing.T) {
+	dir := t.TempDir()
+	content := `
+name: test-profile
+description: Test profile
+packages:
+  required:
+    - secubox-core
+    - secubox-hub
+`
+	path := filepath.Join(dir, "test.yaml")
+	if err := os.WriteFile(path, []byte(content), 0644); err != nil {
+		t.Fatal(err)
+	}
+
+	p, err := Load(path)
+	if err != nil {
+		t.Fatalf("Load() error = %v", err)
+	}
+
+	if p.Name != "test-profile" {
+		t.Errorf("Name = %q, want %q", p.Name, "test-profile")
+	}
+
+	if len(p.Packages.Required) != 2 {
+		t.Errorf("Packages.Required = %d, want 2", len(p.Packages.Required))
+	}
+}

profiles/base.yaml

@@ -0,0 +1,35 @@
+# profiles/base.yaml
+version: "2.8.0"
+name: base
+description: Common SecuBox foundation
+
+packages:
+  required:
+    - secubox-core
+    - secubox-hub
+    - secubox-portal
+    - secubox-system
+    - secubox-hardening
+
+kernel:
+  version: "6.6"
+  modules:
+    enable:
+      - wireguard
+      - nf_tables
+      - nft_nat
+      - nft_ct
+      - nft_log
+    blacklist: []
+
+services:
+  enable:
+    - secubox-hub
+    - nginx
+    - nftables
+
+sysctl:
+  net.ipv4.ip_forward: 1
+  net.ipv4.conf.all.rp_filter: 1
+  kernel.randomize_va_space: 2
+  kernel.kptr_restrict: 2